Miner s lamp



(No Model.)

G. HAYES. MINBRS LAMP.

witmeooao THE NORRIS warms cm, PHDTO-UTHCLI WASHINGTON, u. c.

UNITED STATES PArn NT OFFICE.

GEORGE HAYES, OF GIRARDVILLE, PENNSYLVANIA.

MINERS LAMP.

SPECIFICATION forming part of Letters Patent No. 439,656, dated November 4, 1890.

Application filed March 25, 1890. Serial No. 345,213- (No model.)

To all whom it may concern:

Be it known that I, GEORGE HAYES, a citi= zen of the United States, residing at Girardville, in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in Miners Lamps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon.

Figure 1 of the drawings represents a sectional elevation of a miners lamp embodying my invention. Fig. 2 is a detail view, in perspective, of the elastic packing. Fig. 3 is an end view of the screw-threaded base of the wick-tube.

The present invention has relation to miners lamps, and the object thereof is to provide means whereby the oil is prevented by capillary attraction from escaping out through the tube between it and the wick. Heretofore the oil thus escaping would spread over the Wire-gauze covering usually employed in this class of lamps, and the dirt and dust in the air of a mine, which is more or less mixed with fine particles of saltpeter resulting from continued blasting, coming in contact with the oil,would form a gummy substance highly inflammable. This gummy substance would stop up the meshes of the gauze covering near the bottom thereof for a distance of about one-third of its height, and thus prevent the freecirculation of the airtherethrough,which would result in the gauze covering becoming heated to such a degree as to ignite this gummy substance thus accumulated, and which is so inflammable, resulting in an explosion.

The danger, as above described, is wholly avoided by my invention, which consists in placing an elastic packing within the lamp and between the wick and wick-tube or base thereof, so as to fill the space and wholly prevent the oil by capillary attraction from escaping at that point through the tube and compel the oil to feed itself for consumption through the body or center of the wick, as

will be hereinafter described and claimed.

In the drawings I have shown one of many forms of miners lamps to illustrate the application of my invention, the gauze covering being omitted and not shown, for the reason that it is a wellknown appliance to this class of lamps and not essential to render the description of my invention any more intelligible.

The lamp, as in most all miners lamps, consists of the body or oil-reservoir A, having a hook B or other well-known device to secure it to the object desired. The body A has the usual screw-neck O for connecting therewith the screw-threaded base E upon the lower end of the wick-tube D, this being the ordinary method of connecting the wicktube to the lamp, the base E being a part of the wick-tube, or, in other words, the lower extremity thereof. A suitable packing G such as rubber or other like material of an elastic nature-is located within the lamp and disposed between the wick-tube or joint thereof and the oil-space and extends inward into the place for the wick, as shown in Fig. 1. The packing, as will be seen, fills the space between the wick-tube or base thereof and the wick and prevents the oil from passing out through the tube between it and the wick, and thus effectually prevents the escape of oil which would find its way to the gauze covering with the results as hereinbefore described.

I What I claim as new is- In alamp having a wick-tube, an elastic packing against the inside of the lamp between the wick-tube joint and the oil-space projecting inward into the space for the wick, whereby oil is prevented from passing out of the lamp, substantially as set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

GEORGE HAYES.

Witnesses:

THOMAS FELLOWS, ALBERT H. FELLows. 

